The Diablo III Website announces Blizzard's plans to reinstate limits on the number of games a player can launch within a given time period to help curtail exploits and the use of bots. Here's a bit:

The use of bots not only impacts the stability of the game service, but it also has an impact on the player-driven economy. While we regularly take action against accounts for the use of unauthorized third-party programs and bots, this additional measure will help us further preserve and protect the integrity of the game and economy in between ban waves.

Once this change goes live, we're looking for your feedback to help ensure that the limit is working as intended. If you encounter the "Input limit reached" message and feel you should not have, please let us know how many games you were creating and why. This information will help us ensure the limit minimally impacts legitimate players while still protecting the game against bots.

Well shit, there's no way this is just to curtail the use of bots. Bots or not, it still takes some time to do any farming run, so this will definitely impact manual farming as well. There's a really neat spot in Act 1 that can net you up to 500k per hour between loads of monster gold and some magic drops, but it involves restarting from a conveniently close-by checkpoint and running over to the little side dungeon/basement that has about a 50% chance to be open. It takes no more than 10-15 seconds if it's not there, and maybe up to 25-30 if it is. So if they put a limit on starting games, say only once every 30 seconds or even a minute, it's going to fuck that up pretty bad.

The Barb strategy I and many others use would be pretty much impossible to do with a bot because of the variables involved... But I guarantee Blizzard did not sit around thinking of ways to stop bots, but to stop rapid-restart farming period. They're not going to be satisfied until EVERYONE is funneled into playing this game a very specific way that they think is best. And that is how they're screwing themselves over.